{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["part of", "compare", "used for"], "input": "This paper presents an algorithm for computing optical flow , shape , motion , lighting , and albedo from an image sequence of a rigidly-moving Lambertian object under distant illumination ."}
{"part of": [], "compare": [], "used for": [{"subject": "algorithm", "object": "computing optical flow , shape , motion , lighting , and albedo"}, {"subject": "image sequence", "object": "algorithm"}]}